中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (25): 3944-3949.doi: 10.3969/j.issn.2095-4344.0953

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

慢病毒介导人白细胞介素12转染鼠骨髓间充质干细胞可抑制CT26瘤体的生长

何 杨1,林 晨1,高 琴2,宋京翔3,涂小煌1   

  1. 1解放军福州总医院普外科,福建省福州市 350025;2解放军福州总医院普外科研究所,福建省福州市 350025;3厦门大学附属东方医院普外科,福建省福州市 350025
  • 修回日期:2018-06-25 出版日期:2018-09-08 发布日期:2018-09-08
  • 通讯作者: 涂小煌,博士,主任医师,教授,解放军福州总医院普外科,福建省福州市 350025
  • 作者简介:何杨,男,1987年生,山东省枣庄市人,汉族,2014年福建医科大学毕业,硕士,主要从事胃肠道肿瘤诊疗及临床营养支持研究。 并列第一作者:林晨,男,1979年生,福建省莆田市人,汉族,2011年解放军第二军医大学毕业,博士,副主任医师,主要从事胃肠道肿瘤、血管疾病研究。
  • 基金资助:

    福建省自然科学基金项目(2012J01406);福建省自然科学基金面上项目(2017J01327)

Lentivirus-mediated human interleukin-12 fusion gene-transfected rat bone marrow mesenchymal stem cells inhibit CT26 tumor growth

He Yang1, Lin Chen1, Gao Qin2, Song Jing-xiang3, Tu Xiao-huang1   

  1. 1Department of General Surgery, 2Institute of General Surgery, Fuzhou General Hospital of PLA, Fuzhou 350025, Fujian Province, China; 3Department of General Surgery, Dongfang Hospital of Xiamen University, Fuzhou 350025, Fujian Province, China
  • Revised:2018-06-25 Online:2018-09-08 Published:2018-09-08
  • Contact: Tu Xiao-huang, M.D., Chief physician, Professor, Department of General Surgery, Fuzhou General Hospital of PLA, Fuzhou 350025, Fujian Province, China
  • About author:He Yang, Master, Department of General Surgery, Fuzhou General Hospital of PLA, Fuzhou 350025, Fujian Province, China. Lin Chen, M.D., Associate chief physician, Department of General Surgery, Fuzhou General Hospital of PLA, Fuzhou 350025, Fujian Province, China
  • Supported by:

    the Natural Science Foundation of Fujian Province, No. 2012J01406, 2017J01327

摘要:

文章快速阅读:

文题释义:
骨髓间充质干细胞对结肠癌CT26细胞的作用:
骨髓间充质干细胞是骨髓衍生的非造血基质细胞,它具有增殖能力及多向分化潜能,此外还有较好的肿瘤趋向性,也正是因为这点,其被广泛应用在肿瘤生物治疗中。既往有研究表明,骨髓间充质干细胞有一定的促进肿瘤生长或抑制肿瘤生长的作用,而该研究中未见明显促进或抑制结肠癌CT26细胞的增殖。
白细胞介素12:它由p35和p40两个亚基间通过二硫键结合形成,是一种免疫应答中的关键调节因子,可激活树突状细胞、自然杀伤细胞、T细胞、淋巴因子激活的杀伤细胞等细胞,并在抑制肿瘤血管生长等方面起到重要作用,其在乳腺癌、黑色素瘤等恶性肿瘤细胞的研究中发现可抑制肿瘤细胞的增殖、侵袭,该研究中也发现白细胞介素12可抑制结肠癌CT26细胞的增殖及侵袭。

 

摘要
背景:
白细胞介素12作为最具潜力的抑瘤因子一直是研究的热点,但其在结直肠癌方面的研究相对较少。
目的:构建稳定表达人白细胞介素12的大鼠骨髓间充质干细胞株(hIL-12-BMSCs),观察其对大鼠结肠癌模型的影响。
方法:设计并合成引物,PCR扩增并回收纯化后的p40和p35基因片段,行Overlap-ping PCR连接获得hIL-12的单链双亚基表达融合基因,与慢病毒包装系统共转染293T细胞,构建慢病毒过表达重组体,再转染大鼠骨髓间充质干细胞,药物筛选培育出稳转株。32只裸鼠皮下注射CT26细胞悬液造模成功后,随机分为4组:瘤周分别注射0.2 mL hIL-12-BMSCs(hIL-12-BMSCs组)、0.2 mL PBS溶液(PBS组)、0.2 mL骨髓间充质干细胞(骨髓间充质干细胞组)、0.2 mL表达IL-12的慢病毒液(LV-IL-12组),统计并分析各组瘤体生长情况。
结果与结论:①观察期内PBS组与骨髓间充质干细胞组肿瘤体积差异无显著性意义(P > 0.05),表明骨髓间充质干细胞本身对CT26瘤体生长无明显促进或抑制作用;②注射7 d后hIL-12-BMSCs组与PBS组、PBS组与LV-IL-12组间肿瘤体积差异均有显著性意义(P < 0.01),表明白细胞介素12对CT26瘤体生长有明显抑制作用;③注射10 d后hIL-12-BMSCs组与LV-IL-12组间肿瘤体积差异有显著性意义(P < 0.05),表明hIL-12-BMSCs抑制CT26生长优于LV-IL-12;④结果表明,hIL-12-BMSCs对裸鼠CT26移植瘤体生长有明显的抑制作用。

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0001-8822-1980(何杨)

关键词: 结直肠癌, 人白细胞介素12, 鼠骨髓间充质干细胞, 慢病毒载体, 干细胞, 福建省自然科学基金

Abstract:

BACKGROUND: Interleukin-12 as the most potent anti-tumor factor has been a hot topic in research, but little is reported on its use in the treatment of colorectal cancer.
OBJECTIVE: To construct rat bone marrow mesenchymal stem cell lines stably expressing human interleukin-12 (hIL-12-BMSCs), and to observe its effect on colorectal cancer (CT26).
METHODS: Primers were designed and synthesized, and purified p40 and p35 gene fragments were amplified by PCR. The single-chain double-subunit fusion gene, hIL-12, was obtained by Overlap-ping PCR ligation, and 293T cells were co-transfected with lentiviral packaging system. Recombinant lenovirus overexpressing hIL-12 (LV-IL-12) was constructed to transfect rat BMSCs. The stable strain was then cultured via drug screening. Thirty-two nude mice were subcutaneously injected with CT26 cells to make animal models, and then randomly divided into four groups to receive peritumoral injection of hIL-12-BMSCs (0.2 mL; hIL-12-BMSCs group), 0.2 mL of PBS (PBS group), 0.2 mL of BMSCs (BMSCs group), or 0.2 mL of LV-IL-12 (LV-IL-12 group). Tumor growth was then statistically analyzed in each group.
RESULTS AND CONCLUSION: There was no significant difference in tumor volume between the PBS and BMSCs groups (P > 0.05), indicating that BMSCs cannot promote or inhibit the growth of CT26 tumors. However, from the 7th day after injection, the tumor volume showed a significant difference between hIL-12-BMSCs and PBS groups as well as between PBS and LV-IL-12 groups (P < 0.01), indicating that Hil-12 has a significant inhibitory effect on CT26 tumor growth. From the 10th day after injection, a significant difference in the tumor volume was found between the hIL-12-BMSCs and LV-IL-12 groups (P < 0.05), indicating that hIL-12-BMSCs are more effective than LV-IL-12 in inhibiting the growth of CT26. To conclude, hIL-12-BMSCs considerably inhibit the growth of CT26 tumor.

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Colorectal Neoplasms, Interleukin-12, Bone Marrow, Mesenchymal Stem Cells, Lentivirus Infections, Tissue Engineering

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